• Journal of Nutrition and Health
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• 제29권6호
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• pp.590-593
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• 1996

This study was done to evaluate the effect of dietary calcium level (a diet which met 100% or twice the calcium level in AIN-76 diet) on preventing bone loss in ovariectomized rats. Forty Sprauge-Dawley female rats(body weight 200$\pm$5g)were divided into two groups. One group were ovariecotomized (Ovx) while the others received sham operation(Sham). Thereafter, each rat group was further divided into normal calcium diet(0.52%) and high calcium diet(1.04%) subgroups. All rats were fed on experimental diet and deionized water ad libitum for 8 weeks. The total body, spine and femur bone mineral densities and bone mineral contents were measured by Dual Energy X-ray Absorptiometry, Eight weeks following operation, ovariectomized rats fed a high calcium diet had a significantly higher total bone mineral content, total bone calcium content, spine bone mineral density, spine bone mineral content and femur bone mineral content than ovariectomized rats fed control calcium diet. The correlation between dietary calcium intake level and spine bone mineral density were positive, but there was no correlation between dietary calcium intake and femur bone mineral density. The findings from the present study demonstrated that bone loss due to ovarian hormonal deficiency can be partially prevented by a high calcium diet. Futhermore, these findings support the strategy of the use of a high calcium diet in the prevention of estrogen depleted bone loss(postmenopausal osteoporosis)

• Journal of Nutrition and Health
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• 제33권3호
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• pp.241-249
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• 2000

The bone mineral density(vertebrae Ll-4, femoral neck, Ward's triangle and trochanter) of 160 healthy adult women aged 29-45 was measured and general characteristics, anthropomentric measurements, and dietary intake were also studied to determine the main factors affecting the bone mineral density(BMD) of adult women. The nutrient intake of the subjects was adequate to RDA level except energy, Ca, Fe, and vit A. The BMD of vertebrae L24 showed significant positive association with nutrient intake such as animal protein, P, Ca(animal) and Fe(animal). The BMD of the femoral neck correlated significantly with anthropometric measurements such as height, weight, waist circumference, hip circumference, body fat and body mass index. The BMD of both sites(vertebrae L24 and femoral neck) were significantly related to vertebrae L24 was daily Ca intake and that of femoral neck was daily energy expenditure. In conclusion, adequate nutrient intake, especially protein, P, Ca and Fe as well as increases in physical activity were suggested to prevent the loss of bone mineral density in adult women.

• 동의생리병리학회지
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• 제23권6호
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• pp.1508-1512
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• 2009

This study was designed to analyze the results of bone mineral density test in oriental medical examination. The subjects were workers in the automobile manufacturing industry. The subjects consisted of 3,206 industrial workers who had received oriental medical examination by oriental medicine and they submitted questionnaires about drinking history and smoking history, during 9 months from March to November. They were categorized by sex, age, job class, drinking history, smoking history and exercise history. The T-scores were measured by using OSTEOPRO(BMTECH, Seoul, Korea). We analyzed the relationship between sex, age, job class, drinking history, smoking history, exercise history and the results of bone mineral density using X2-test of the SPSS Ver. 14.0. There was a positive correlation between age and osteoporosis prevalence. In job class, sales personnel were apt to have a higher prevalence of osteoporosis than factory workers and office workers. Osteoporosis rates of the drinker group showed a higher level than the non-drinker group. Bone mineral densities of non-smoker group were higher than the Smoker group. And bone mineral densities of exerciser group were higher than the non-exerciser group. They have to encourage exercise and educate the workers to quit smoking for their health promotion. Furthermore, continuous health check up needs to be done connectedly.

• 대한간호학회지
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• 제41권6호
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• pp.758-767
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• 2011

Purpose: This study was done to examine the threshold value of estimated height loss at which the risk of osteoporosis increases and to verify its discriminative ability in the detection of osteoporosis. Methods: It was conducted based on epidemiological descriptive methods on 732 Korean women at a public healthcare center in Seoul between July and November 2010. ANOVA, Pearson correlation, logistic regression analysis and receiver operating characteristics (ROC) curve were used for data analysis. Results: There was an age-related correlation between bone mineral density (lumbar spine: F=37.88, p<.001; femur: F=54.27, p<.001) and estimated height loss (F=27.68, p<.001). Estimated height loss increased significantly with decreasing bone mineral density (lumbar spine: r=-.23, p<.001; femur: r=-.34, p<.001). The odds ratio for the point at which the estimated height loss affects the occurrence of osteoporosis was found to increase at a cut-off value of 2 cm and the area under ROC curve was .71 and .82 in lumbar spine and femur, respectively. Conclusion: The optimal cut-off value of the estimated height loss for detection of osteoporosis was 2 cm. Height loss is therefore a useful indicator for the self-assessment and prognosis of osteoporosis.

• 기본간호학회지
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• 제20권3호
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• pp.230-238
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• 2013

Purpose: This study was done to identify the relationship among bone mineral density (BMD), body composition and osteoporosis self-efficacy and to identify predictors of BMD in female nursing students. Method: Participants were 154 nursing students. Osteoporosis self-efficacy was determined by a self-report questionnaire. BMD was measured by ultrasound bone densitometry and body composition by a body composition analyzer. Data were collected between April 1 and 27, 2013 and analyzed using descriptive statistics, ANOVA, Scheff$\acute{e}$ test, Pearson correlation coefficient, and multiple regression with SPSS 18.0. Results: Mean BMD at the calcaneus site was $0.58{\pm}1.31$ (T-score). Incidence of osteopenia was 11.7%. Percentage of body fat (PBF)-defined obesity had higher prevalence than body mass index (BMI)-defined obesity. BMD had significant positive correlations with skeletal muscle mass (r=.226, p=.005) and fat free mass (r=.225, p=.005). The factor predicting BMD was skeletal muscle mass with 4.7% of explained variance. Conclusion: Study results indicate that of body composition components, skeletal muscle mass is the prime predicting factor for BMD. Thus to promote healthy bones, it is important to strengthen the muscles using a program, based on balanced development of all muscles.

• 한국보건간호학회지
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• 제25권2호
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• pp.266-275
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• 2011

Purpose: The study investigated the relationship of health behavior with bone mineral density (BMD) for college students. Methods: A descriptive study was done using a convenient sampling of college students (n=116) enrolled in a health-related department. Height, weight, body mass index (BMI), health behaviors recognition of subjective health, smoking, drinking, exercise, food habits, intake of calcium, and family history of fracture were measured. BMD was measured at the right forearm using Hologic lunar duel-energy X-ray absorptiometry. Data were analyzed using descriptive analysis, t-test, ANOVA and multiple linear regression. Results: The prevalence of osteopenia and osteoporosis was 41.4% and 22.4%, respectively. Significant relationships were observed between BMD of right forearm and gender, BMI, subjective health recognition, drinking, and exercise (p<.05). Results of linear regression after adjusted BMD were increased concerning subjective health recognition and regular exercise (p<.05). Conclusions: Subjective health recognition and exercise carries positive effects on BMD. We recommend for college students that healthy behaviors like proper weight, smoking cessation, regular exercise, regular food habits, and health awareness are helpful to BMD.

• 근관절건강학회지
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• 제16권2호
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• pp.105-115
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• 2009

Purpose: The purpose of this study was to investigate whether college women would change their exercise and milk intake behavior after the bone mineral density (BMD) test, and to understand the influencing factors in the exercise & milk intake behavioral change. Method: A questionnaire survey which assesses the exercise and m ilk intake behavior was carried out to the 194 college women from June, 2007 to August, 2007, then they had BMD test in the distal radius site. One year later, 146 women have done a similar questionnaire including osteoporosis know ledge, osteoporosis self efficacy, exercise and milk efficacy, and their health belief. Results: The group that had begun regular exercises after the BMD test showed the lowest level of BMD and exercise barrier. And the other group that had been taking exercises before the test, showed the highest osteoporosis self efficacy, exercise efficacy and osteoporosis sensitivity. As for the behavioral change related to milk intake, only the group that had started to intake a cup of milk a day showed the lowest BMD. Conclusion: This study shows that the BMD testing can induce the behavioral change of exercise and milk intake in college women.

• 한방재활의학과학회지
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• 제24권1호
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• pp.101-109
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• 2014

Objectives The relationship between metabolic syndrome causes and bone mineral density (BMD) was explored by taking 60 female chronic low back pain patients with age 61 years old or elder having metabolic syndrome and osteoporosis as study subjects. Methods Fasting blood glucose, serum total-cholesterol, triglyceride and HDL were measured by biochemical tests. Anthropometric elements and blood pressure were measured. Results Average BMD and T-score of part number 1 to 3 of lumbar vertebra were estimated by Quantitative Computed Tomography (QCT). In order to find the relationship between clinical factors and osteoporosis, correlation analysis was done on T-score. Age (r=0.679, p<0.01) had significant negative correlation and weight (r=0.342, p<0.01) and height (r=0.475, p<0.01) had significant positive correlation. Blood glucose, blood pressure, total cholesterol, triglyceride, HDL and body mass index did not have significant correlation. BMD had negative correlation with age (r=0.317, p<0.05). Regression analysis was done by taking T-score as independent variables and taking other factors as dependent variables. It was possible to know that age ($\beta$=-0.471, t=-7.050) with p<0.001, height ($\beta$=0.277, t=4.120) and weight ($\beta$=2.856, t=2.780) with p<0.05 have significant impact on osteoporosis. Conclusions Therefore, it was possible to know that T-score and BMD decrease as one gets older and T-score and BMD increase as one is taller and heavier.

• 한국식품영양과학회지
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• 제35권9호
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• pp.1200-1206
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• 2006

단백질과 칼륨의 섭취량으로 산출한 NEAP와 여성의 골밀도 및 골대사지표와의 관련성을 알아보기 위하여 $18\sim81$세의 여성 276명을 대상으로 설문조사와 식사섭취조사, 요추와 대퇴경부의 골밀도 측정, 소변의 디옥시피리디놀린을 분석한 결과는 다음과 같다. 대상자들의 NEAP 수준은 요추 골밀도(p<0.05)와 유의적인 음의 상관성을 보였고 대퇴경부 골밀도와도 유의적인 수준은 아니었으나 음의 상관성을 보였다. NEAP의 수준에 따라 대상자를 4분위수로 분류하고 연령, 신장, 체중의 차이를 보정하여 골밀도를 비교하였을 때 NEAP 수준이 가장 낮은 군의 요추 및 대퇴경부 골밀도가 가장 높았으나 유의적인 차이를 보이지는 않았다. 또한 단백질의 섭취량에 따른 골밀도의 4분위수 분석결과 단백질의 섭취량이 증가함에 따라 요추 골밀도가 감소하였다(p<0.05). 이상의 연구결과를 통하여 체내에서 알칼리를 생성하는 칼륨의 섭취증가와 체내에서 산을 생성하는 단백질의 섭취감소를 통한 체내 산도의 감소가 여성의 골밀도와 긍정적인 관련성을 나타낼 수 있음이 제시되었다. 따라서 칼슘섭취의 부족문제가 좀처럼 해결되고 있지 않은 우리나라의 식생활에서 골용해와 칼슘의 배설을 줄임으로써 골격건강을 유지할 수 있는 방안으로 단백질의 과잉섭취를 제한하고 체내 알칼리를 형성할 수 있는 무기질이 풍부한 식품의 섭취를 늘일 수 있도록 하는 식사지침의 마련이 필요하다고 생각된다. 또한 본 연구에서는 골밀도에 긍정적인 영향을 미치는 체내 알칼리성 유도 영양소를 칼륨으로만 한정했지만, 마그네슘이나 칼슘 등도 체내 알칼리성에 영향을 미치는 요인이기 때문에 다양한 알칼리성 영양소의 섭취가 골밀도에 미치는 영향에 대한 추후 연구가 요구된다.

• 한국소음진동공학회논문집
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• 제16권9호
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• pp.949-957
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• 2006

In this Paper, reduction of noise and vibration in ship cabins by using floating floor is studied. Two theoretical models are presented and predicted insertion losses of floating floor are compared to experimental results, where measurements have been done in mock-up built for simulating typical ship cabin structures. In ships, mineral wool is usually used as the impact absorbing materials. The first model (M-S-Plate Model) is that upper plate and mineral wool are assumed as a one-dimensional mass-spring system, which is in turn attached to the simply supported elastic floor. The second model (Wave-Plate Model) is that mineral wool is assumed as an elastic medium for wave propagation. The comparisons show that M-S-Plate model is in good agreement with experimental results when density of mineral wool is 140K, and fiber direction is horizontal. For higher density and vertical fiber direction, Wave-Plate model shows good agreements with measurements. It is found that including the elastic behavior of the floor is essential in improving accuracy of the prediction for low frequency ranges below $100{sim}200Hz$.